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15
Math.TechQA.Club
2026-04-24 18:30:48
86
Views
Is it possible to define submanifold like this
Published on
24 Apr 2026 - 18:30
#differential-geometry
#differential-topology
#definition
7.4k
Views
Why is it necessary for a ring to have multiplicative identity?
Published on
15 Apr 2026 - 6:02
#abstract-algebra
#ring-theory
#terminology
#definition
#rngs
135
Views
A more formal but intuitive understanding (on a definition) of a group action
Published on
11 Apr 2026 - 6:20
#abstract-algebra
#group-theory
#definition
#intuition
337
Views
The (matrix) definition of a positive-definite function
Published on
08 Apr 2026 - 17:43
#real-analysis
#definition
#motivation
2k
Views
Why countable unions, intersections etc.?
Published on
16 Apr 2026 - 3:58
#measure-theory
#definition
#intuition
2k
Views
What's the derivative of a map defined on manifolds?
Published on
24 Apr 2026 - 20:22
#differential-geometry
#differential-topology
#definition
582
Views
Definition of adjoint functor similar to the definition of homotopy equivalence?
Published on
14 Apr 2026 - 16:26
#category-theory
#definition
#intuition
1.2k
Views
Does the arccos itself contain all solutions or just one solution?
Published on
14 Apr 2026 - 1:06
#definition
#inverse
#periodic-functions
100
Views
Alternative definition of differential
Published on
12 Apr 2026 - 16:00
#general-topology
#multivariable-calculus
#definition
325
Views
What is Convolution?
Published on
10 Apr 2026 - 22:31
#definition
#convolution
651
Views
Strange definition of real differentiable function
Published on
12 Apr 2026 - 18:31
#real-analysis
#complex-analysis
#continuity
#definition
147
Views
Definition of "in terms of" for a constant vs a variable
Published on
11 Apr 2026 - 5:58
#definition
1.1k
Views
Closure of a pre compact subspace is compact?
Published on
15 Apr 2026 - 13:06
#general-topology
#metric-spaces
#definition
#compactness
7.9k
Views
Product of two ideals
Published on
18 Apr 2026 - 13:28
#abstract-algebra
#definition
#ideals
421
Views
Confused about definition of quotient map
Published on
10 Apr 2026 - 15:32
#general-topology
#definition
#quotient-spaces
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